Objects (OOP)

  • Classes are a template/blueprint
  • Class - Fruit: Object - Apple, Banana, Kiwi
  • CLasses can contain data members, methods and constructors
Painter mypainter = new Painter();
  • Access modifier : Public, Protected, Private, Default

  • Return type : data type returned by the method if none its void

  • Defining and calling methods are advantageous because it can be used for reuse, optimization and organization

  • Use already present methods and MATH

Homework

  • GOBLIN
import java.lang.Math;

public class Goblin {
    private String name;
    private int HP;
    private int DMG;
    private double hitChance;

    public String getName() {
        return name;
    }

    public int getHP() {
        return HP;
    }

    public int getDMG() {
        return DMG;
    }

    public double getHitChance() {
        return hitChance;
    }

    public boolean isAlive() {
        if (this.HP > 0) {
            return true;
        } else {
            return false;
        }
    }

    public void setName(String newName) {
        this.name = newName;
    }

    public void setHP(int newHP) {
        this.HP = newHP;
    }

    public void takeDMG(int takenDamage) {
        this.HP -= takenDamage;
    }

    public void setDMG(int newDMG) {
        this.DMG = newDMG;
    }

    public void setHitChance(double newHitChance) {
        this.hitChance = newHitChance;
    }
}

public class Duel {

    public static void fight(Goblin goblin1, Goblin goblin2) {
        while (goblin1.isAlive() && goblin2.isAlive()) {
            goblin1.takeDMG(goblin2.getDMG());
            System.out.println(goblin1.getName() + " takes " + goblin2.getDMG() + " damage");
            System.out.println(goblin1.getName() + " HP: " + goblin1.getHP());

            if (!goblin1.isAlive()) {
                System.out.println(goblin1.getName() + " has perished");
                break;
            }

            if (Math.random() < goblin1.getHitChance()) {
                goblin2.takeDMG(goblin1.getDMG());
                System.out.println(goblin2.getName() + " takes " + goblin1.getDMG() + " damage");
                System.out.println(goblin2.getName() + " HP: " + goblin2.getHP());

                if (!goblin2.isAlive()) {
                    System.out.println(goblin2.getName() + " has perished");
                    break;
                }
            }
            else{
                System.out.println(goblin1.getName() + " missed the attack!");
            }
        }
    }

    public static void main(String[] args) {
        Goblin goblin1 = new Goblin();
        goblin1.setName("jeffrey");
        goblin1.setHP(12);
        goblin1.setDMG(2);
        goblin1.setHitChance(0.50);

        Goblin goblin2 = new Goblin();
        goblin2.setName("Gunther the great");
        goblin2.setHP(4);
        goblin2.setDMG(1);
        goblin2.setHitChance(1);

        fight(goblin1, goblin2);
    }
}

Duel.main(null);

jeffrey takes 1 damage
jeffrey HP: 11
Gunther the great takes 2 damage
Gunther the great HP: 2
jeffrey takes 1 damage
jeffrey HP: 10
jeffrey missed the attack!
jeffrey takes 1 damage
jeffrey HP: 9
jeffrey missed the attack!
jeffrey takes 1 damage
jeffrey HP: 8
Gunther the great takes 2 damage
Gunther the great HP: 0
Gunther the great has perished